51crv4 Steel Coil
51crv4 Steel Coil
51crv4 Steel Coil
51crv4 Steel Coil
51crv4 Steel Coil

51crv4 Steel Coil

51CrV4 Chemical composition: Carbon C: 0.47 ~ 0.55 Silicon Si: ≤0.40 Manganese Mn: 0.70 ~ 1.10 Sulfur S: ≤0.030 P: ≤0.030 Chromium Cr: 0.90 ~ 1.20 Nickel Ni: ≤0.35 Copper Cu: ≤0.25 Vanadium: 0.10 ~ 0.25

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Product Introduction

51crv4 Steel Coil is from which country? What kind of material can be used in China?

51CrV4 spring steel is implemented to British standard. Corresponding to the domestic 50CRV.

51CrV4(1.8159) spring steel has good mechanical properties and process properties, high hardenability, adding vanadium to fine-grain steel, reduce overheating sensitivity, improve strength and toughness, with high fatigue strength, yield ratio is also high, but poor weldability, low cold deformation plasticity.

51CrV4 is a higher level spring, used as a large section of high load important spring and operating temperature <300 ℃ valve spring, piston spring, safety valve spring.

Mechanical property

Tensile strength σb (MPa) : ≥1274(130)

Yield strength σs (MPa) : ≥1127(115)

Elongation δ5 (%) : ≥10

Section shrinkage ratio ψ (%) : ≥40

Hardness: hot rolling,≤321HB; Cold drawing + heat treatment,≤321HB

Heat treatment specification and metallographic structure

Heat treatment specification: quench 850℃±20℃, oil cold; Tempering 500℃±50℃(for special needs,±30℃)